Hi Product Hunt, I'm Michihito, an indie developer from Japan.

I run a 5,000-follower local discovery account on Instagram. Across my last 10 posts, I had 5,893 likes from 4,020 unique people—and when I ran a Story poll to see who actually visited the places I featured, 50% of the real-world visitors were quiet repeat likers (2–4 likes across 10 posts) who had never left a single comment.

Instagram Insights gives you total numbers, but it never tells you WHO keeps coming back post after post. Checking the "Liked by" modal by hand across 10 posts never scales, so I built FanPulse.

Here's how it works:

Open any Instagram post on Chrome and scroll through the "Liked by" modal.
Click Capture in the FanPulse popup. It reads the user list directly from the page's in-memory React Fiber / Redux state (zero extra requests to Instagram's servers).
Repeat on a few posts—your local dashboard immediately ranks everyone by repeat likes and comments, shows their full comment history in one place, and lets you tag leads or write private CRM notes.

What about privacy & account safety?

100% offline storage in your browser's localStorage (your data never leaves your computer).
Zero ban risk: No Instagram password, no API login, and no background cloud scrapers.

To be upfront about limitations:

Because FanPulse never runs background scrapers, it only captures the likers loaded in the modal you open on screen, and Instagram caps a single post's visible "Liked by" list at roughly 100–300 users. It's built for creators, local businesses, and niche brands (500 to 50k followers), not celebrity mega-accounts.

Pricing:

Free to try: Analyze up to 3 posts per account with no features locked.
Pro Lifetime: $65 one-time purchase (no subscription) for unlimited post history and CSV/JSON export — use code PH50 at checkout for 50% off ($32.50) during our launch!

Chrome Web Store:

https://chromewebstore.google.com/detail/cfdapkhcfoggchclhlhkkjpcfbhpndaf

I'd love to hear what your account data looks like once you run 3 posts through it, or any questions about how the local extraction works!